They sat in the lab, Gibbs getting angrier by the minute. The tightly controlled fury had Abby worried for his health, though no more so than Ducky.

Is there anything more that the five of you have done or know about and have kept from me? His voice was lethally quiet.

There were five low-voiced variations on denial. Fine. Then let's see if we can finally figure out what the hell is going on! Everyone in the room jumped as Gibbs' tone went from reasonable to violent in seconds. Controlling his volume, if not his rage, he turned to Ducky. Doctor. You say she's had some suspicions about sabotage on some of her cases?Nothing she could prove, Jethro. She's told me every now and then she had the feeling that something or someone had blown her cover at particularly inopportune moments. She's managed to squeak out of most of those situations, but she's never figured out what happened. Then there was the business with Perry. She was highly suspicious of the CIA character. Something about the way he handled the bust. Ducky subsided and Gibbs slowly shifted his glare to Tony.

He spoke harshly. Why didn't you tell me about the problems at Arlington right away?

Oh, no. You're not going to lay this one on me, Boss. I told her she had to come tell you and she wouldn't have anything to do with it, Tony countered, angry that Gibbs had held out on them as well. If we're going to sort this out, why don't we start with you two? What haven't you told us about the Trainor case? Or is it more personal than that?

Kate, Abby and McGee stared open-mouthed and Ducky hid a grin behind his hand.

It's none of your damn business, DiNozzo! Gibbs growled at the younger man.

Yes it is. We're all involved, now. Tony gestured to McGee angrily. You can't expect us to help you solve this if you won't trust us with the information we need. He stopped and sighed. Look, Gibbs, we're a team. But more than that, we're you're friends. We want to help, but we can't if you shut us out.

Silence reigned in the lab as Gibbs looked around, seeing the concern on the faces of the people he sometimes took for granted. Slowly he sank into a chair and laid out the missing pieces of his last case with Leah. He kept Morrow's name out of it, referring to him only as a friend.

We should have talked before we got back here after the shooting. But she was furious with me. She could have taken the shot without my go-ahead, but that wasn't how we worked. In three years, we'd never made a move that we didn't both agree on, always backing each other up. And as senior partner, I outranked her. When I didn't tell her to take the shot, she must have felt... Kate's quiet voice finished his sentence. Why didn't you tell her about the sniper?

He sighed. I wanted to. I should have. But she was so angry and the drive went quickly. I figured once she had time to calm down we'd talk it through. I had no idea what was waiting for us when we got back here.Hey, Gibbs? Abby broke the silence when he had finished. I think I may have just found your last missing link. She looked up from the screen in front of her as everyone faced her. I finally got the names of the hostages that were killed. Two of them were Marie Ketterer and Ian Ketterer Jr.Oh my God, Kate breathed as McGee said, She was right, Ketterer is behind it.

Kate nodded and continued. It makes sense. His wife and son, Abby?Yep, and it was his only child, too, Abby confirmed.

It's revenge. He must blame everyone who was there for allowing them to die. Kate turned to the rest of the team and caught McGee's look. Wasn't he there, too? Isn't he just as much to blame?We're not dealing with someone rational, McGee. He probably believes he was the only one who could have saved them. Kate sat next to Tony.

Gibbs glared at her before taking control again. All right, we need to tie him to this. Let's find everything we can on him. Do we have a picture of this guy?

McGee turned around and grabbed a file from the desk behind him. Passing it to the silver-haired man silently, they all grouped loosely around him to get a glimpse of Ketterer.

Flicking through the file, Gibbs grimaced, then handed it back to McGee. This is pretty thin. You three, find out everything about this guy from birth to ten minutes ago; I want it on my desk now. He turned to Ducky as Tony, Kate and McGee prepared to leave the lab. I need to talk to you for a minute. Both of you, he added as he caught Abby's eye.

We need to tie Ketterer to these crimes. Is there anyway to connect him to the cantharidin or the location Candy found the nougat it was in?We can try, Jethro. We know that it was indeed one of the prescription wart removers that was used. It's possible we can trace the medication to him. Ducky glanced at Abby.

Problem is, Gibbs, we don't know the where the Best Little Whorehouse in D.C. is. And if it was one of the working girls instead of him, we're sunk, she said.

Yes, but Candy knows, and so does Kitty. And we need that location; it's possible that's our primary crime scene. Get Kate or Tony to help you. As Gibbs turned and headed for the doors, Abby's voice stopped him.

Can I ask you something?Sure, Abbs, anything. He faced the young woman, surprised to note the serious look in her eyes.

Why did Leah take McGee at gunpoint and handcuff him? It sounds like he understood what she was doing, but I don't. She didn't seem like that kind of a person to me.She needed his help; she didn't have a car. When you're undercover, you don't have friends. Friends are weapons that can be used against you. She knew she was being watched. So, it's exactly like she told him, she was saving his life. He saw the understanding dawn in her eyes and gave her shoulder a gentle squeeze. Then he was moving out the door before either of them could put together the significance of his words with the pictures they saw earlier.

Where are you going? Ducky's voice followed him.

To check on a hunch.

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As he crossed the darkened parking lot, Gibbs flipped open his cell phone and pressed the power button. If he was right, it shouldn't take him more than a half-hour to confirm it, then he'd call in the others. But he wanted some intel on the situation before he'd let his team risk themselves for himself and Leah.

He checked his Sig after he seated himself in his car. Then he drove out and headed for the one place that would have any significance for Leah, himself and the man he'd seen in the photograph in Ketterer's file.